Creep ceramic membrane

Most oxygen-ion transport membranes operate in the temperature range 750 to 1000 °C. This creates several problems for operation of ceramic membranes. First, the membranes must tolerate a 20 bar pressure differential at temperatures that are conducive to generating creep-induced failure. The membrane materials which have high ionic conductivity also have large numbers of lattice vacancies to facilitate mobility of the ionic species, but lattice vacancies are major contributors to elevated creep rates. 

High-temperature sealing and connection. For the fabrication of industrial dense ceramic MRs, a key problem is the development of seals for membrane integrity with other reactor components that are able to operate at high temperatures. One solution to seal ceramic membranes with metal is the use of ceramic glass. These materials usually require high temperatures to melt, and creep of the membrane can be detrimental to the sealing [5]. 

Creep behaviour of tubular Bao,5Sro,5Coo,8Feo,203-s gas separation membranes. /. Eur Ceram, Soc., 31, 493-499. 

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